Canon EOS 5D MkII - Test Shots – ISO Performance

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”Over the next few pages we show a range of test shots. On this page the full size image at the minimum and maximum ISO settings have been reduced to let you see the full image, and a series of full resolution crops have taken from original images at a range of ISO settings to show the overall image quality. ”


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This is the full frame at 100 ISO.


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The focusing appears to be slightly off in this shot, but there is no image noise at all.


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Still no noise t 200 ISO…


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….400 ISO…


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…800 ISO…


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…1600 ISO. There is a tiny hint of noise in the green channel, but barely enough to notice.


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At 3200 ISO there is a smattering of noise all over the image, but it is still quite printable.


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Slightly more noise at 6400, but still plenty of detail.


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Extended to an uncalibrated 12,800 ISO there is quite a lot of noise, but the banner letters are still readable.


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At 25,600 ISO the image quality is finally breaking down, as well it might.


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This is the full frame at 25,600 ISO, which I don’t think I’ve ever typed before.


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